Mahr MarSurf M 300, Operating Instructions Manual, Page: 22 / 72

Mahr GmbH, MarSurf M 300 and RD 18 18
To enter or change the code number:
1. If necessary, switch off blocking for instru­
ment settings (see below).
2. In the "Basic settings" menu select the
"Code number" button by pressing the key.
3. Enter the previous code number with the
keys 1 to 0 and press the START key.
4. Use the keys 1 to 0 to enter any five­digit
code number between "1" and "99999"
and press the
START
key.
5. If necessary, switch blocking for instrument
settings back on again (see below).
With blocking switched off, the code
number can be changed by any user.
To switch blocking on/off:
1. Activate or deactivate the "Blocking" check
box in the "Basic settings" menu by press­
ing the key.
2. Enter the code number with the keys
1
to
0
and press the START key.
If an incorrect code number was entered,
the "Blocking" check box will be displayed
again with the previous setting.
To retain the new instrument settings
(i. e. also the settings for blocking) after
the MarSurf M 300 is switched off, an
error­free meas urement must be carried
out with these settings.
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Switching the timeout on/off
To save battery power, the switch­on time can
be limited using a timeout function.
When timeout is switched on, the MarSurf M 300
and the selected RD 18 switch off automatically
after approx. two minutes if no key is pressed
within this time period.
The instrument settings used to perform the last
error­free meas urement are retained. The results
of the last meas urement are also retained.
The timeout can be deactivated for continuous
operation in mobile applications.
Timeout is not in effect if the MarSurf
M 300 is connected to the mains with
the AC adapter.
Switching blocking for instrument settings
on/off (code number protection)
The instrument settings can be blocked. They can
also be protected against unauthorized changes
by means of a code number. The code number
is also requested for certain functions in the "USB
memory" menu.
The code number "00000" is set at the factory.
This setting allows any user to change the in­
strument settings, including switching blocking
on/off. For this reason it is recommended to en­
ter a code number when starting up the MarSurf
M 300 for the first time.
The instrument settings cannot be
modified if they are blocked (i. e. if the
"Blocking" check box is activated in the
"Basic settings" menu).
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